Integrated Circuits (ICs)

LD1117ADT33TR

Active

STMicroelectronics

FIXED LDO VOLTAGE REGULATOR, 4.5V TO 10V, 1.15V DROP, 3.3V/1 A OUT, TO-252-3

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Integrated Circuits (ICs)

LD1117ADT33TR

Active

STMicroelectronics

FIXED LDO VOLTAGE REGULATOR, 4.5V TO 10V, 1.15V DROP, 3.3V/1 A OUT, TO-252-3

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DocumentsDatasheet Product Change Notice EN

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LD1117ADT33TR

Current - Output	1 A
Current - Quiescent (Iq)	10 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	0 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	SC-63, DPAK (2 Leads + Tab), TO-252-3
Protection Features	Over Current, Over Temperature
PSRR	75 dB
Supplier Device Package	DPAK
Voltage - Input (Max) [Max]	15 V
Voltage - Output (Min/Fixed)	3.3 V
Voltage Dropout (Max) [Max]	1.3 V

LD1117A Series

Low drop fixed and adjustable positive voltage regulators

Part	Voltage - Input (Max) [Max]	Package / Case	Voltage Dropout (Max) [Max]	Current - Quiescent (Iq)	Output Type	Protection Features	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	PSRR	Supplier Device Package	Output Configuration	Number of Regulators	Current - Output	Mounting Type	Output Type
STMicroelectronics LD1117S33TR	15 V	TO-261-4 TO-261AA	1.2 V	10 mA	1.81 mOhm	Over Current Over Temperature	3.3 V	125 °C	75 dB	SOT-223	Positive	1	800 mA	Surface Mount
STMicroelectronics LD1117DT33	15 V	DPAK (2 Leads + Tab) SC-63 TO-252-3	1.2 V	10 mA	1.81 mOhm	Over Current Over Temperature	3.3 V	125 °C	75 dB	DPAK	Positive	1	800 mA	Surface Mount
STMicroelectronics LD1117S18TR	15 V	TO-261-4 TO-261AA	1.2 V	10 mA	1.81 mOhm	Over Current Over Temperature	1.8 V	125 °C	75 dB	SOT-223	Positive	1	800 mA	Surface Mount
STMicroelectronics LD1117V-DG	15 V	TO-220-3	1.2 V	5 mA		Over Current Over Temperature	1.25 V	125 °C	75 dB	TO-220	Positive	1	800 mA	Through Hole	Adjustable
STMicroelectronics LD1117AS25TR	15 V	TO-261-4 TO-261AA	1.3 V	10 mA	1.81 mOhm	Over Current Over Temperature	2.5 V	125 °C	80 dB	SOT-223	Positive	1	1 A	Surface Mount
STMicroelectronics LD1117DT25TR	15 V	DPAK (2 Leads + Tab) SC-63 TO-252-3	1.2 V	10 mA	1.81 mOhm	Over Current Over Temperature	2.5 V	125 °C	75 dB	DPAK	Positive	1	800 mA	Surface Mount
STMicroelectronics LD1117AS33TR	15 V	TO-261-4 TO-261AA	1.3 V	10 mA	1.81 mOhm	Over Current Over Temperature	3.3 V	125 °C	75 dB	SOT-223	Positive	1	1 A	Surface Mount
STMicroelectronics LD1117DT12TR	15 V	DPAK (2 Leads + Tab) SC-63 TO-252-3	1.2 V	5 mA	1.81 mOhm	Over Current Over Temperature	1.2 V	125 °C	75 dB	DPAK	Positive	1	800 mA	Surface Mount
STMicroelectronics LD1117DT50TR	15 V	DPAK (2 Leads + Tab) SC-63 TO-252-3	1.2 V	10 mA	1.81 mOhm	Over Current Over Temperature	5 V	125 °C	75 dB	DPAK	Positive	1	800 mA	Surface Mount
STMicroelectronics LD1117ADT33TR	15 V	DPAK (2 Leads + Tab) SC-63 TO-252-3	1.3 V	10 mA	1.81 mOhm	Over Current Over Temperature	3.3 V	125 °C	75 dB	DPAK	Positive	1	1 A	Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.71
		10	$ 0.63
		25	$ 0.59
		100	$ 0.48
		250	$ 0.45
		500	$ 0.38
		1000	$ 0.30
	Digi-Reel®	1	$ 0.71
		10	$ 0.63
		25	$ 0.59
		100	$ 0.48
		250	$ 0.45
		500	$ 0.38
		1000	$ 0.30
	Tape & Reel (TR)	2500	$ 0.28
		5000	$ 0.26
		12500	$ 0.25
		25000	$ 0.24
Newark	Each (Supplied on Full Reel)	1	$ 0.21

Description

General part information

LD1117A Series

The LD1117 is a low drop voltage regulator able to provide up to 800 mA of output current, available even in adjustable version (VREF= 1.25 V). Concerning fixed versions, are offered the following output voltages: 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.3 V and 5.0 V. The device is supplied in: SOT-223, DPAK, SO-8 and TO-220. The SOT-223 and DPAK surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficiency is assured by NPN pass transistor. In fact in this case, unlike than PNP one, the quiescent current flows mostly into the load. Only a very common 10 μF minimum capacitor is needed for stability. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1 % at 25 °C. The adjustable LD1117 is pin to pin compatible with the other standard. Adjustable voltage regulators maintaining the better performances in terms of drop and tolerance.